Games like Jump Man
Games like Jump Man include Celeste, SANABI, Super Meat Boy, Jump King, and VVVVVV. We matched them by the tags players give Jump Man on Steam (Indie, Action, Adventure, Racing, and Precision Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Indie · Precision Platformer · Difficult

SANABI
Shared: Action · Adventure · Indie

Super Meat Boy
Shared: Indie · Precision Platformer · Platformer

Jump King
Shared: Indie · Precision Platformer · Adventure

VVVVVV
Shared: Indie · Precision Platformer · Platformer

Skul: The Hero Slayer
Shared: Indie · Action · Pixel Graphics

Hollow Knight
Shared: Platformer · Indie · Difficult

Downwell
Shared: Indie · Precision Platformer · Action

Katana ZERO
Shared: Action · Indie · Platformer

Hollow Knight: Silksong
Shared: Indie · Difficult · Platformer

The End Is Nigh
Shared: Indie · Precision Platformer · Platformer

Shovel Knight: Treasure Trove
Shared: Indie · Platformer · Adventure

I wanna be the Creator
Shared: Action · Adventure · Platformer

Pizza Tower
Shared: Indie · 2D Platformer · Platformer

Rain World
Shared: Indie · Difficult · Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · Indie

BlazBlue Entropy Effect
Shared: Action · Platformer · Indie

Rogue Legacy 2
Shared: Action · Indie · Platformer

The Messenger
Shared: Platformer · Indie · Action

Out There Somewhere
Shared: Indie · Platformer · Adventure

Angry Video Game Nerd Adventures
Shared: Indie · Action · Platformer

Titan Souls
Shared: Indie · Adventure · Action

Nine Sols
Shared: Action · Difficult · Indie

Blasphemous
Shared: Indie · Pixel Graphics · Action